Same form to different e-mail addresses and not the same content

Code:
public function index()

 {

        $output[] = NULL;

        // (...) - There are some things here, like captcha...

 if ($this->form_validation->run() === FALSE)

 {

            $output['content'] = $this->load->view('contact', $data, TRUE);

 }

        else

        {

            $mail['ip'] = $this->input->server("REMOTE_ADDR");

            $mail['date'] = date('d/m/Y H:i:s');

            $mail['subject'] = $this->input->post('subject', TRUE);

            $mail['name'] = $this->input->post('name');

            $mail['email'] = $this->input->post('email');

            $mail['phone'] = $this->input->post('phone');

            $mail['msg'] = $this->input->post('msg', TRUE);



            $this->load->library('email');



            $this->email->from('some@email', 'Name from sender');

            $this->email->to('who_receive@email');



            $this->email->subject($mail['subject']);

            $this->email->message("IP: ".$mail['ip'].

                                  "\nDate: ".$mail['date'].

                                  "\nName: ".$mail['name'].

                                  "\nE-Mail: ".$mail['email'].

                                  "\nPhone: ".$mail['phone'].

                                  "\nSubject: ".$mail['subject'].

                                  "\n\nMessage: \n".$mail['msg']);



            $this->email->send(); // Here the first e-mail is sent



            $msg1 = 'Hello ';

            $msg2 = '. Great to receive your contact. We will call you as soon as possible.';



            $this->email->from('who_sends@email', 'Your Contact');

            $this->email->to($mail['email']); // will send the new mail to the address person filled in the form



            $this->email->subject($mail['subject']); // or can use another subject, just to test

            $this->email->message("Data: ".$mail['data'].

                                  "\n".$msg1.

                                  "".$mail['name'].

                                  "".$msg2.

                                  "\n".

                                  "\nNice to talk to you - www.yoursite.com");



            $this->email->send();



            $this->session->set_flashdata('success', 'Success. Your contact was sent.');



            redirect(site_url('contact'), 'location');

        }



  $this->load->view('layouts/default', $output);

 }